[R] lme, lmer, convergence

Hello, all, I am running some simulations to estimate power for a complicated epidemiological study, and am using lme and lmer to get these estimates. I have to run a few thousand iterations, and once in a great while, an iteration will create fake data such that the model won't converge. I s

Re: [R] Invalid 'yscale' in viewport

Thanks for your quick response, Michael. That is indeed the script I was talking about -- I didn't see it in a standard package, so I just copied it and ran it as a standalone thing. I'm afraid the data are proprietary (human subjects, health data) and so I can't share them. I was able to con

Re: [R] Invalid 'yscale' in viewport

Never mind, I found it -- I had some NA values I didn't know about! I will infer that viewport doesn't handle NA values gracefully! (If I'm wrong about that and I've just missed something key, please correct me.) Erin -Original Message- From: R. Michael Weylandt [mailto:michael.weyla